package io;

import java.io.*;

public class CopyDemo_3 {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("image.png");
        BufferedInputStream bis = new BufferedInputStream(fis);
        FileOutputStream fos = new FileOutputStream("image_cp3.png");
        BufferedOutputStream bos = new BufferedOutputStream(fos);
        int d;
        long start = System.currentTimeMillis();
        while ((d = bis.read()) != -1){
            bos.write(d);
        }
        long end = System.currentTimeMillis();
        System.out.println("复制完毕，耗时："+(end-start)+"ms");
    }
}
